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常见问题 我们总结了一些常见问题
生产 A. 是的。 我们为客户提供OEM/ODM解决方案。 OEM 最小起订量为 10,000 件。
A. 我们按联合国规定包装,也可根据客户要求提供特殊包装。
A. 我们有 ISO9001、CB、CE、UL、BIS、UN38.3、KC、PSE。
A. 我们提供功率不超过 10WH 的电池作为免费样品。
A. 每天120,000-150,000件,每个产品有不同的生产能力,您可以根据电子邮件讨论详细信息。
其他名称 A. 我们一般接受 30% 的预付款作为定金,交货前的 70% 作为最终付款。 其他方式可协商。
A. 我们已将货物运往北欧、西欧、北美、中东、亚洲、非洲等地。
专业技术 A. 电池是一种通过反应将化学能或物理能转化为电能的能量转换和储存装置。根据电池能量转换的不同,电池可分为化学电池和生物电池。化学电池或化学电源是将化学能转化为电能的装置。它由两个不同成分的电化学活性电极组成,分别由正极和负极组成。采用能够提供介质传导的化学物质作为电解质。当连接到外部载体时,它通过转换其内部化学能来传递电能。物理电池是一种将物理能转化为电能的装置。
A. 主要区别在于活性物质不同。 二次电池的活性物质是可逆的,而一次电池的活性物质则不可逆。 一次电池的自放电比二次电池小得多。 然而,内阻比二次电池大得多,因此负载容量较低。 此外,一次电池的质量比容量和体积比容量比现有的可充电电池更显着。
A. 镍氢电池以氧化镍为正极,储氢金属为负极,碱液(主要是KOH)为电解液。镍氢电池充电时: 正极反应:Ni(OH)2 + OH- → NiOOH + H2O–e- 负极反应:M+H2O +e-→ MH+ OH- 镍氢电池放电时:正极反应:NiOOH + H2O + e- → Ni(OH)2 + OH- 负极反应:MH+ OH- →M+H2O +e-
A. 锂离子电池正极的主要成分是LiCoO2,负极主要是C。充电时,正极反应:LiCoO2 → Li1-xCoO2 + xLi+ + xe- 负极反应:C + xLi+ + xe- → CLix 电池总反应:LiCoO2 + C → Li1-xCoO2 + CLix 放电时发生上述反应的逆反应。
A. 电池常用的IEC标准:镍氢电池的标准为IEC61951-2:2003;锂离子电池行业一般遵循UL或国家标准。电池常用的国家标准:镍氢电池的标准有GB/T15100_1994、GB/T18288_2000;锂电池的标准有GB/T10077_1998、YD/T998_1999、GB/T18287_2000。此外,电池常用的标准还包括关于电池的日本工业标准JIS C。 IEC,即国际电气委员会(International Electrical Commission),是由各国电气委员会组成的世界性标准化组织。其宗旨是促进世界电气电子领域的标准化。 IEC标准是国际电工委员会制定的标准。
A. 镍氢电池的主要组成部分有正极片(氧化镍)、负极片(储氢合金)、电解液(主要是KOH)、隔膜纸、密封圈、正极帽、电池壳等。
A. 锂离子电池的主要组成部分有电池上下盖、正极片(活性物质为钴酸锂)、隔膜(一种特殊的复合膜)、负极(活性物质为碳)、有机电解液、电池壳(分为钢壳和铝壳两种)等等。
A. 是指电池工作时电流流过电池所经历的电阻。 它由欧姆内阻和极化内阻组成。 电池显着的内阻会降低电池放电工作电压,缩短放电时间。 内阻主要受电池材料、制造工艺、电池结构等因素影响。 它是衡量电池性能的重要参数。 注:一般以充电状态下的内阻为标准。 计算电池内阻时,应使用专用内阻计,而不是欧姆量程的万用表。
A. 电池的标称电压是指正常工作时表现出的电压。 二次镍镉镍氢电池标称电压为1.2V; 二次锂电池的标称电压为3.6V。
A. 开路电压是指电池不工作时,即电路中没有电流流过时,电池正负极之间的电位差。 工作电压又称端电压,是指电池工作时,即电路中存在过电流时,电池正负极之间的电位差。
A. 电池的容量分为额定功率和实际容量。 电池的额定容量是指在设计和制造时规定或保证电池在一定的放电条件下应放出的最低电量。 IEC标准规定镍镉和镍氢电池在0.1℃±16℃的温度下以0.2C充电1.0小时,以20C放电至5V。 电池的额定容量用C5表示。 锂离子电池规定在常温、恒流(3C)-恒压(1V)控制苛刻条件下充电4.2小时,放电至额定容量时以0.2C至2.75V放电。 电池的实际容量是指在一定的放电条件下暴放出的真实电量,主要受放电倍率和温度的影响(所以严格来说,电池容量应该注明充放电条件)。 电池容量的单位为Ah、mAh(1Ah=1000mAh)。
A. 充电电池在大电流(如1C以上)放电时,由于电流过流内部扩散速率存在“瓶颈效应”,在容量未完全放完时,电池已达到端电压,然后用0.2C等小电流可以继续去除,直至1.0V/个(镍镉、镍氢电池)和3.0V/个(锂电池),释放出的容量称为剩余容量。
A. 镍氢充电电池的放电平台通常是指在特定的放电制度下放电时电池工作电压相对稳定的电压范围。 其值与放电电流有关。 电流越大,重量越轻。 锂离子电池的放电平台一般是电压为4.2V时停止充电,恒压电流小于0.01C,放置10分钟,以任意倍率放电至3.6V当前的。 是衡量电池质量的必要标准。
A. 根据IEC标准,镍氢电池的标志由5部分组成。 01)电池类型:HF、HR表示镍氢电池 02)电池尺寸信息:包括圆形电池的直径和高度,方形电池的高度、宽度和厚度以及数值 之间用斜杠隔开,单位:mm 03) 放电特性符号: L 表示适合的放电电流率在0.5CM以内 表示适合的放电电流率在0.5-3.5CH以内 表示适合的放电电流率在3.5以内-7.0CX表示电池可以工作在7C-15C的高倍率放电电流下。 04)高温电池符号:用T表示 05)电池连接件:CF表示无连接件,HH表示电池牵引式串联连接件,HB表示并列串联连接件电池带。 例如,HF18/07/49代表方形镍氢电池,宽度为18mm、7mm、高度为49mm。 KRMT33/62HH代表镍镉电池; 放电倍率0.5C-3.5之间,高温系列单体电池(不含连接片),直径33mm,高度62mm。 根据IEC61960标准,二次锂电池的标识如下: 01)电池标识组成:3个字母,后跟6个数字(圆柱形)或XNUMX个(方形)数字。 02)第一个字母:表示电池的有害电极材料。 I——代表锂离子内置电池; L——代表锂金属电极或锂合金电极。 03)第二个字母:表示电池的正极材料。 C——钴基焊条; N——镍基电极; M——锰基焊条; V——钒基电极。 04)第三个字母:表示电池的形状。 R-代表圆柱电池; L-代表方形电池。 05)数字:圆柱形电池:5个数字分别表示风暴的直径和高度。 直径的单位是毫米,尺寸的单位是十分之一毫米。 当任何直径或高度大于或等于100mm时,应在两个尺寸之间加一条对角线。 方形电池:6个数字表示风暴的厚度、宽度和高度,单位为毫米。 当三个尺寸中任意一个大于或等于100mm时,尺寸之间应加斜线;如果三个尺寸中的任何一个小于1毫米,则在该尺寸前面添加字母“t”,该尺寸的单位是十分之一毫米。 例如ICR18650代表圆柱形二次锂离子电池; 正极材料为钴,直径约为18mm,高度约为65mm。 ICR20/1050。 ICP083448代表方形二次锂离子电池; 正极材料为钴,厚度约为8mm,宽度约为34mm,高度约为48mm。 ICP08/34/150代表方形二次锂离子电池; 正极材料为钴,厚度约为8mm,宽度约为34mm,高度约为150mm。
A. 01)纤维纸、双面胶带等不干介子(纸) 02)PVC薄膜、商标管 03)连接片:不锈钢片、纯镍片、镀镍钢板 04)引出片:不锈钢片(易焊接) 纯镍片(点焊牢固) 05)插头 06)温控开关、过流保护器、限流电阻等保护元件 07)纸箱、纸盒 08)塑料外壳
A. 01)漂亮,品牌 02)电池电压有限。为了获得更高的电压,必须将多个电池串联起来。 03) 保护电池,防止短路,延长电池寿命 04) 尺寸限制 05) 便于运输 06) 特殊功能设计,如防水、独特的外观设计等。
A. 主要包括电压、内阻、容量、能量密度、内压、自放电率、循环寿命、密封性能、安全性能、存储性能、外观等,还有过充、过放、耐腐蚀等。
A. 01)循环寿命 02)不同倍率放电特性 03)不同温度下的放电特性 04)充电特性 05)自放电特性 06)储存特性 07)过放电特性 08)不同温度下的内阻特性 09)温度循环测试10) 跌落测试 11) 振动测试 12) 容量测试 13) 内阻测试 14) GMS 测试 15) 高低温冲击测试 16) 机械冲击测试 17) 高温高湿测试
A. 01) 短路测试 02) 过充过放测试 03) 耐压测试 04) 冲击测试 05) 振动测试 06) 发热测试 07) 防火测试 09) 变温循环测试 10) 涓流充电测试 11) 自由跌落测试12)低气压试验 13)强制放电试验 15)电热板试验 17)热冲击试验 19)针刺试验 20)挤压试验 21)重物冲击试验
A. 镍氢电池的充电方法: 01)恒流充电:整个充电过程中充电电流为一个特定值;这种方法最常见; 02)恒压充电:充电过程中,充电电源两端保持恒定值,电路中的电流随着电池电压的升高而逐渐减小; 03)恒流恒压充电:首先对电池进行恒流(CC)充电。当电池电压上升到特定值时,电压保持不变(CV),电路中的风量下降到很小,最终趋于零。锂电池充电方式: 恒流恒压充电:首先对电池进行恒流(CC)充电。当电池电压上升到特定值时,电压保持不变(CV),电路中的风量下降到很小,最终趋于零。
A. IEC国际标准规定,镍氢电池的标准充放电为:先将电池以0.2C放电至1.0V/个,然后以0.1C充电16小时,放置1小时,放以0.2C至1.0V/个,即以电池标准充放电。
A. 脉冲充电一般采用充放电,设定5秒后释放1秒。 它将在放电脉冲下将充电过程中产生的大部分氧气还原为电解质。 它不仅限制了内部电解液的蒸发量,而且那些严重极化的旧电池在使用这种充电方法充放电5-10次后会逐渐恢复或接近原始容量。
A. 涓流充电用于弥补电池充满电后自放电造成的容量损失。 一般采用脉冲电流充电来达到上述目的。
A. 充电效率是指电池在充电过程中消耗的电能转化为电池可以储存的化学能的程度。 主要受电池技术和暴风雨的工作环境温度影响——一般环境温度越高,充电效率越低。
A. 放电效率是指在一定的放电条件下放电至额定容量时的实际功率。 主要受放电倍率、环境温度、内阻等因素影响。 一般来说,放电率越高,放电率越高。 放电效率越低。 温度越低,放电效率越低。
A. 电池的输出功率是指单位时间内输出能量的能力。根据放电电流I和放电电压计算得出,P=U*I,单位为瓦特。电池的内阻越低,输出功率就越高。电池的内阻应小于用电器的内阻。否则,电池本身比用电器消耗更多的电量,既不经济,又可能损坏电池。
Q. 什么是二次电池的自放电?不同类型电池的自放电率是多少?
A. 自放电也称为电荷保持能力,是指电池在开路状态下在一定环境条件下所储存电量的保持能力。一般来说,自放电主要受制造工艺、材料和储存条件的影响。自放电是衡量电池性能的主要参数之一。一般来说,电池的储存温度越低,自放电率越低,但也应注意温度过低或过高,都可能损坏电池而无法使用。电池充满电并开路一段时间后,平均会出现一定程度的自放电。 IEC标准规定,镍氢电池充满电后,在温度28℃±20℃、湿度(5±65)%的条件下,开路放置20天,0.2C放电容量达到60%。初始总数。
A. 锂电池的自放电测试为:一般采用24小时自放电来快速测试其荷电保持能力。电池以0.2C恒流放电至3.0V。恒压充电至4.2V,截止电流:10mA,存放15分钟后,以1C放电至3.0V测试其放电能力C1,然后将电池设置为恒流恒压1C至4.2V,截止关断电流:10mA,放置1小时后测量2C容量C24。 C2/C1*100% 应比 99% 更显着。
A. 充电状态内阻是指电池100%充满电时的内阻;放电状态内阻是指电池完全放电后的内阻。一般来说,放电状态下的内阻不稳定且过大。充电状态下内阻较小,阻值比较稳定。电池在使用过程中,只有充电状态的内阻才具有实际意义。在电池的帮助后期,由于电解液的耗尽和内部化学物质活性的降低,电池的内阻会出现不同程度的增加。
A. 静态内阻是电池放电时的内阻,动态内阻是电池充电时的内阻。
A. IEC规定镍氢电池的标准过充电测试为:将电池以0.2C放电至1.0V/个,并以0.1C持续充电48小时。电池应无变形、漏液。过充后,从0.2C放电到1.0V的时间应大于5小时。
A. IEC规定镍氢电池的标准循环寿命测试为:将电池置于0.2C至1.0V/个01)0.1C充电16小时,然后0.2C放电2小时30分钟(02个循环) 0.25)3C充电10小时0.25分钟,2C放电20小时2分钟(48-03个循环) 0.25)3C充电10小时1.0分钟,放电至0.25C 49V(第04次循环) 0.1)16C充电1小时,放置0.2小时,1.0C放电至50V(第400次循环)。对于镍氢电池,重复1-4循环0.2次后,3C放电时间应明显大于500小时;对于镍镉电池,重复1-4总共0.2个循环,3C放电时间应该比XNUMX小时更关键。
A. 是指电池内部气压,是由密封电池充放电时产生的气体引起的,主要受电池材料、制造工艺、电池结构的影响。其主要原因是电池内部水分和有机溶液分解产生的气体积聚。一般来说,电池的内部压力保持在平均水平。在过充电或过放电的情况下,电池的内部压力可能会增加:例如过充电,正极:4OH--4e→2H2O+O2↑; ① 生成的氧气与负极析出的氢气反应生成水 2H2 + O2 → 2H2O ② 如果反应②的速度低于反应①的速度,则生成的氧气不能及时消耗掉,会导致电池内部压力升高。
A. IEC规定镍氢电池的标准荷电保持测试为:将电池置于0.2C至1.0V后,以0.1C充电16小时,在20℃±5℃、湿度65%±的条件下保存20%,保持28天,然后以1.0C放电至0.2V,镍氢电池应在3小时以上。国家标准规定锂电池的标准荷电保持率测试为:(IEC无相关标准)将电池置于0.2C至3.0/个,然后以4.2C恒流恒压充电至1V,用截止风量10mA,温度20℃±28℃保存5天后,2.75C放电至0.2V,计算放电容量。与电池标称容量相比,应不低于初始总容量的85%。
A. 用内阻≤100mΩ的导线连接防爆箱内充满电的电池正负极,使正负极短路。 电池不应爆炸或着火。
A. 镍氢电池的高温高湿试验为:电池充满电后,在恒温恒湿条件下存放数天,存放期间观察无漏液。锂电池的高温高湿试验为:(国家标准)将电池用1C恒流恒压充电至4.2V,截止电流10mA,然后放入连续恒温恒湿箱中( 40±2)℃、相对湿度90%-95%放置48h,然后取出电池于(20±5)℃放置2.75h。观察电池外观应规范。然后以1C恒流放电至1V,然后在(1±20)℃下进行5C充电和85C放电循环,直至放电容量不小于初始总量的XNUMX%,但循环次数不超过超过三倍。
A. 电池充满电后,放入烘箱中,以5℃/min的速度从室温开始升温。 电池充满电后,放入烘箱中,以5℃/min的速度从室温开始升温。 130°C/分钟。当烤箱温度达到30°C时,保持130分钟。电池不应爆炸或着火。当烤箱温度达到30°C时,保持XNUMX分钟。电池不应爆炸或着火。
A. 温度循环实验共27个循环,每个过程由以下步骤组成: 01) 将电池从平均温度改为66±3℃,在1±15%的条件下放置5小时, 02) 切换到温度33±3℃、湿度90±5℃放置1小时, 03) 条件改为-40±3℃,放置1小时 04) 将电池置于25℃放置0.5小时 这四个步骤完成一个循环。经过27次循环实验后,电池应无漏液、爬碱、生锈等异常情况。
A. 电池或电池组充满电后,从1m高处跌落至混凝土(或水泥)地面XNUMX次,获得随机方向的冲击。
A. 镍氢电池的振动测试方法为:将电池以1.0C放电至0.2V后,以0.1C充电16小时,放置24小时后在以下条件下振动: 振幅:0.8mm电池在10HZ-55HZ之间振动,以每分钟1HZ的振动频率增加或减少。电池电压变化应在±0.02V以内,内阻变化应在±5mΩ以内。 (振动时间为90min)锂电池振动测试方法为:将电池以3.0C放电至0.2V后,以4.2C恒流恒压充电至1V,截止电流10mA。放置24小时后,会在以下条件下振动:振动实验以振动频率从10赫兹到60赫兹到10赫兹5分钟进行,振幅为0.06英寸。电池三轴方向振动,每轴振动半小时。电池电压变化应在±0.02V以内,内阻变化应在±5mΩ以内。
A. 电池充满电后,水平放置一根硬棒,将20磅重的物体从一定高度落到硬棒上。 电池不应爆炸或着火。
A. 电池充满电后,将特定直径的钉子穿过风暴中心,并将钉子留在电池中。 电池不应爆炸或着火。
A. 将充满电的电池放在带有独特防火保护罩的加热装置上,并且不会有碎片穿过保护罩。
A. 通过了ISO9001:2000质量体系认证和ISO14001:2004环保体系认证; 产品获得欧盟CE认证和北美UL认证,通过SGS环保检测,并获得Ovonic专利许可; 同时,人保财险已批准该公司产品在全球范围承保。
A. 即用型电池是公司推出的新型高荷电保持率镍氢电池。 是一种具有原、二次电池双重性能、可替代原电池的耐储存电池。 也就是说,该电池可以回收利用,并且在与普通镍氢二次电池相同的时间内储存后具有更高的剩余电量。
Q. 为什么即用型 (HFR) 是替代一次性电池的理想产品?
A. 与同类产品相比,本产品具有以下显着特点: 01)自放电更小; 02) 储存时间更长; 03)耐过放; 04)循环寿命长; 05)特别是当电池电压低于1.0V时,具有良好的容量恢复功能;更重要的是,该类电池在75℃环境下保存一年,电荷保持率高达25%,因此该电池是替代一次性电池的理想产品。
A. 01)使用前请仔细阅读电池说明书; 02)电器和电池触点应清洁,必要时用湿布擦拭干净,干燥后按极性标记安装; 03)不要新旧电池混用,同一型号不同型号的电池不能混用,以免降低使用效率; 04)一次性电池不能通过加热或充电再生; 05)请勿使电池短路; 06)请勿拆卸、加热电池或将电池投入水中; 07)电器长期不使用时,应将电池取出,使用后应将开关关闭; 08)不要随意丢弃废旧电池,并尽可能将其与其他垃圾分开,以免污染环境; 09) 在没有成人监护的情况下,请勿让儿童更换电池。小电池应放置在儿童接触不到的地方; 10)应将电池存放在阴凉、干燥、无阳光直射的地方。
A. 目前,镍镉、镍氢、锂离子充电电池广泛应用于各种便携式电器设备(如笔记本电脑、相机、手机等)。每个充电电池都有其独特的化学特性。镍镉电池和镍氢电池的主要区别在于镍氢电池的能量密度比较高。与同类型电池相比,镍氢电池的容量是镍镉电池的两倍。这意味着,在不给用电设备增加额外重量的情况下,使用镍氢电池可以显着延长设备的工作时间。镍氢电池的另一个优点是,它显着减少了镉电池的“记忆效应”问题,使镍氢电池的使用更加方便。镍氢电池比镍镉电池更环保,因为内部不含有毒重金属元素。锂离子电池也迅速成为便携式设备的常用电源。锂离子电池可提供与镍氢电池相同的能量,但重量可减轻约35%,适用于相机和笔记本电脑等电气设备。这是至关重要的。锂离子电池没有“记忆效应”、不含有毒物质的优点也是其成为常用电源的重要因素。它会显着降低镍氢电池在低温下的放电效率。一般情况下,充电效率会随着温度的升高而提高。然而,当温度升至45℃以上时,充电电池材料在高温下的性能会下降,会显着缩短电池的循环寿命。
Q. 电池的放电率是多少?风暴每小时的释放率是多少?
A. 倍率放电是指燃烧时放电电流(A)与额定容量(A·h)之间的速率关系。 小时率放电是指在特定的输出电流下放出额定容量所需的小时数。
A. 由于数码相机中的电池温度较低,活性物质活性明显降低,可能无法提供相机的标准工作电流,因此在低温地区进行户外拍摄尤其如此。注意相机或电池的温度。
A. 如果将不同容量的新旧电池混用或一起使用,可能会出现漏液、零电压等现象,这是由于充电过程中电量的差异,导致部分电池在充电时出现过充现象。 有些电池没有充满电,放电时还有容量。 高容量电池未完全放电,低容量电池过度放电。 如此恶性循环,导致电池损坏、漏液或电压低(零)。
A. 将电池的外部两端连接到任何导体上都会导致外部短路。 短期使用可能会给不同类型的电池带来严重的后果,如电解液温度升高、内部气压升高等。如果气压超过电池盖的耐受电压,电池就会漏液。 这种情况会严重损坏电池。 如果安全阀失效,甚至可能引起爆炸。 因此,请勿使电池外部短路。
A. 01)充电:选择充电器时,最好使用带有正确充电终止装置(如防过充时间装置、负压差(-V)截止充电、防过热感应装置)的充电器,避免因过度充电而缩短电池寿命。一般来说,慢充比快充更能延长电池的使用寿命。 02) 放电:放电深度是影响电池寿命的主要因素。释放深度越高,电池寿命越短。也就是说,只要减少放电深度,就可以显着延长电池的使用寿命。因此,我们应该避免将电池过度放电到很低的电压。 b.当电池在高温下放电时,会缩短其使用寿命。 C。如果设计的电子设备不能完全停止所有电流,如果设备长时间闲置而没有取出电池,残余电流有时会导致电池过度消耗,造成暴风过放。 d.当使用不同容量、化学结构或不同充电水平的电池以及各种新旧类型的电池时,电池会过度放电,甚至引起反极性充电。 03)储存:如果电池长期在高温下储存,会减弱其电极活性,缩短其使用寿命。
Q. 电池用完后或长时间不使用可以存放在电器中吗?
A. 如果长时间不使用电器,最好将电池取出,放在低温、干燥的地方。 如果不这样做,即使关闭电器,系统仍然会使电池有低电流输出,从而缩短暴风雨的使用寿命。
Q. 电池存放的最佳条件是什么?长期存放需要将电池充满电吗?
A. 根据IEC标准,电池应存放在温度20℃±5℃、湿度(65±20)%的环境中。一般来说,暴风雨的存放温度越高,容量剩余率越低,反之亦然,存放电池的最佳地点是冰箱温度为0℃-10℃,尤其是原电池。即使二次电池在存放后失去容量,只要经过多次充放电就可以恢复。理论上,电池在储存时总会有能量损失。电池固有的电化学结构决定了电池容量不可避免地会损失,主要是由于自放电。通常,自放电的大小与正极材料在电解液中的溶解度及其受热后的不稳定性(容易自分解)有关。充电电池的自放电远高于原电池。如果要长期存放电池,最好将其放置在干燥低温的环境中,并保持电池剩余电量在40%左右。当然,最好每月取出一次电池,以保证暴风雨良好的存储状态,但不要将电池完全耗尽,损坏电池。
A. 国际上规定作为测量电位(电势)标准的电池。它是由美国电气工程师E.韦斯顿于1892年发明的,因此也称为韦斯顿电池。标准电池的正极为硫酸汞电极,负极为镉汞齐金属(含10%或12.5%) 镉),电解质为酸性饱和硫酸镉水溶液,即饱和硫酸镉和硫酸亚汞水溶液。
A. 01)电池外部短路或过充、反充(强制过放); 02)电池高倍率大电流持续过充,导致电芯膨胀,正负极直接接触短路; 03)电池短路或轻微短路。例如,正负极放置不当导致极片接触短路、正极接触等。
A. 01)单节电池是否零电压; 02)插头短路或断线,插头接触不良; 03)引线、电池的拆焊、虚焊; 04)电池内部连接不正确,连接片与电池有漏液、虚焊、脱焊等; 05) 电池内部电子元件连接错误、损坏。
A. 为了防止电池过充,需要控制充电终点。当电池充满时,会有一些独特的信息,可以用来判断充电是否到达终点。一般防止电池过充的方法有以下六种: 01)峰值电压控制:通过检测电池的峰值电压来确定充电结束; 02)dT/DT控制:通过检测电池的峰值温度变化率来判断充电结束; 03)△T控制:当电池充满电时,温度与环境温度的温差达到最大; 04)-△V控制:当电池充满电并达到峰值电压时,电压会下降特定值; 05)定时控制:通过设置具体的充电时间来控制充电的终点,一般设置充电到标称容量的130%所需的时间来处理;
A. 01)零电压电池或电池组中的零电压电池; 02)电池组断线,内部电子元件及保护电路异常; 03)充电设备故障,无输出电流; 04)外部因素导致充电效率过低(如极低或极高的温度)。
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